The One Direction heartthrobs have surprised European fans by announcing details of a colour-specific dress code for one of their upcoming live shows.

Member Liam Payne took to his official Twitter page this afternoon (May 2) and told his followers that if they plan on attending their concert in Amsterdam tomorrow, they need to wear something orange:

"Hi everyone if your coming to the Amsterdam gig tomorrow you have to wear orange!!!! Have tooooo!! :)! Thanks #turnziggoorange."

Singer Harry Styles joined in with the request and added: "So, for the show in Amsterdam tomorrow. You MUST be wearing orange. Orange and orange and orange only. Wear orange. Orange. Orange you glad we told you?"

Following their tweets, member Louis Tomlinson informed his own fans of the "strict" rules: "Everybody who's coming to the Amsterdam gig tomorrow. Please be advised there is a strict dress code of orange and only orange!"

They will perform their 'Take Me Home' show on Friday night (May 3) at the Ziggo Arena in Amsterdam.